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BR 850S
Nilfisk-Advance BR 850S User Manual
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10/04 revised 10/06 FORM NO. 56043097
SER
VICE MANU
AL
Adg
r
essor
™
BR 850S, 850CS, 950S, 950CS
BR 1050S, 1050CS
Advance MODELS 56314661(2820D), 56314662(3220D), 56314663(2820C), 56314664(3220C)
56314826(3520D), 56314827(3820D), 56314828(3520C), 56314829(3820C)
Nil
fi
sk MODELS 56314674(850S), 56314675(850CS), 56314830(950S), 56314831(1050S),
56314832(950CS), 56314833(1050CS)
2
Table of Contents
Service Manual
1
Table of Contents
2
General Information
4
Safety Instructions
5
Specifications & Maintenance
6
Maintenance Schedule
8
Lubricating the Machine
8
Batteries and Chargers
8
Pm Checklist
9
Know Your Machine
11
Control Panel
12
Functional Description of Control Buttons
13
Description of Indicators on the Control Panel
16
Steering System
18
Steering Column Assembly Shroud Removal
18
Steering Chain Removal and Tensioning
19
Wheel Drive System
20
General Functional Overview
20
Drive Motor System Controller Function Overview
20
Wheel Drive Troubleshooting Guide
23
Steering Spindle & Wheel Drive Motor Assembly Removal
24
Drive Tire Removal
24
Brake Adjustment
26
Drive Wheel Brake Strap Replacement
27
Wheel Drive Motor Carbon Brush Inspection
27
Potentiometer Removal and Testing
28
Potentiometer Installation & Adjustment
29
Drive Pedal Neutral Adjustment
29
Wheel Drive System
29
Scrub Brush System
30
Functional Overview
30
Scrub Brush System Troubleshooting
31
Scrub Brush Deck Removal (Disc & Cylindrical)
32
Scrub Brush Motor Assembly Removal (Disc)
33
Scrub Brush Gearbox Removal and Output Shaft Replacement (Disc)
33
Scrub Brush Side Skirt Replacement (Disc)
34
Side Skirt Height Adjustment (Disc)
34
Scrub Brush Front/Rear Skirt Replacement (Disc)
34
Brush Deck Actuator Removal (Disc & Cylindrical)
35
Scrub Brush Motor Removal (Cylindrical)
36
Scrub Brush Belt Replacement (Cylindrical)
36
Scrub Brush System Maintenance
36
Scrub Brush Removal and Installation (Cylindrical)
37
Side Skirt Maintenance & Adjustment (Cylindrical)
37
Correct Scrub Motor Wiring Connections
38
Correct Brush Rotation Directions
39
Solution System
40
Functional Overview
40
Solution Solenoid Circuit Overview
41
Troubleshooting Guide
42
Solution System Maintenance
42
Solution Solenoid Removal
42
Solution System
43
Solenoid Valve Disassembly and Cleaning
43
Recovery System
44
Functional Overview
44
Vacuum Motor Circuit Overview
45
Troubleshooting Guide
46
Vacuum / Recovery System Service Maintenance Checklist
46
Maintenance of Vacuum Filter and Float Cage
46
Recovery Tank Removal
47
Vacuum Motor Removal
47
Squeegee System
48
Squeegee System Lift Motor Overview
48
Troubleshooting
48
Squeegee Lift Actuator Motor Removal
49
Squeegee Lift Cable Replacement
49
Squeegee System
50
Squeegee Maintenance
50
Squeegee Adjustment
50
Electrical System
51
Batteries / Chargers Specifications
51
Install the Batteries
51
Description of the Battery Low Voltage Cutout Feature
52
Description of the Battery Condition Indicator
52
Charging the Batteries
52
Battery Maintenance
53
Battery Testing
53
Actuator Drive Nut Adjustment
54
Actuator Drive Nut Adjustment
55
Curtis Controller Diagnostics
56
Diagnostic History
56
Curtis Speed Control
56
Installation Checkout for the Curtis Speed Controller
58
Programming Vehicle Speed Changes
59
Main Control Board Functional Overview
60
Main Control Board Troubleshooting Guide
60
Main Controller Error Codes
60
Main Controller Error Codes
61
Main Controller Service Test Mode
62
Output Controls
63
Main Control Board Special Program Options
66
ELECTRICAL COMPONENT LOCATION (before Serial Number Chart)
75
WIRING DIAGRAM (before Serial Number Chart)
76
WIRING SCHEMATIC (before Serial Number Chart)
77
WIRING DIAGRAM (after Serial Number Chart)
78
WIRING SCHEMATIC (after Serial Number Chart)
79
ELECTRICAL COMPONENT LOCATION (after Serial Number Chart)
80
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Nilfisk-Advance BR 850S Specifications
General
Brand
Nilfisk-Advance
Model
BR 850S
Category
Floor Machine
Language
English
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